Just reviving this thread in the new year. Story so far for my laptop is:
- On Linux both eDP and HDMI work fine, even with rotation. Linux uses intel driver with SNA acceleration. - On NetBSD 10.0 BETA, only intel driver works, only with UXA acceleration. No other driver or no other acceleration for intel driver works. In this mode rotation slows down refreshes on eDP alone as well as on HDMI (alone or together with eDP) - If I try UXA acceleration on Linux, it shows all the problems mentioned above on Linux as well. I have experimented with various options with UXA and SNA; using both native and modular X11 servers. None have helped so far. So, on the verge of giving up... That means once again no NetBSD on my laptop for indefinite time. Any suggestions are most welcome. -- Mayuresh